construction of sewerage disposal on sector dividing road 2 / 4 and laying of d.i. line for pumping sewage of sector-2, 6 and 7 to hsvp master sewage disposal at sector dividing road 5 / 15, 4 / 4a and 3a / 3b along sector dividing road 3, 3a / 4, bahadurgarh, “work of supply and laying of earth, construction of pump chamber, sump well etc at sector dividing road 2 / 4 bahadurgarh and providing and laying of 400mm outer dia hdpe pn8 pipe from sector2 to master sewerage disposal at sector dividing road 5 / 15, 4 / 4a and 3a / 3b along sector dividing road 3, 3a / 4, bahadurgarh and all other works contingent thereto. ( including defect liability period of 3 years free of cost ) .